19911420

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1$

素因数の和:282

約数の個数: 144

約数和(自身を含む): 66594528

約数和(自身を除く): 46683108

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 85, 90, 102, 108, 135, 153, 162, 170, 180, 204, 241, 243, 255, 270, 306, 324, 340, 405, 459, 482, 486, 510, 540, 612, 723, 765, 810, 918, 964, 972, 1020, 1205, 1215, 1377, 1446, 1530, 1620, 1836, 2169, 2295, 2410, 2430, 2754, 2892, 3060, 3615, 4097, 4131, 4338, 4590, 4820, 4860, 5508, 6507, 6885, 7230, 8194, 8262, 8676, 9180, 10845, 12291, 13014, 13770, 14460, 16388, 16524, 19521, 20485, 20655, 21690, 24582, 26028, 27540, 32535, 36873, 39042, 40970, 41310, 43380, 49164, 58563, 61455, 65070, 73746, 78084, 81940, 82620, 97605, 110619, 117126, 122910, 130140, 147492, 184365, 195210, 221238, 234252, 245820, 292815, 331857, 368730, 390420, 442476, 553095, 585630, 663714, 737460, 995571, 1106190, 1171260, 1327428, 1659285, 1991142, 2212380, 3318570, 3982284, 4977855, 6637140, 9955710, 19911420]

約数ペア:

[(1, 19911420), (2, 9955710), (3, 6637140), (4, 4977855), (5, 3982284), (6, 3318570), (9, 2212380), (10, 1991142), (12, 1659285), (15, 1327428), (17, 1171260), (18, 1106190), (20, 995571), (27, 737460), (30, 663714), (34, 585630), (36, 553095), (45, 442476), (51, 390420), (54, 368730), (60, 331857), (68, 292815), (81, 245820), (85, 234252), (90, 221238), (102, 195210), (108, 184365), (135, 147492), (153, 130140), (162, 122910), (170, 117126), (180, 110619), (204, 97605), (241, 82620), (243, 81940), (255, 78084), (270, 73746), (306, 65070), (324, 61455), (340, 58563), (405, 49164), (459, 43380), (482, 41310), (486, 40970), (510, 39042), (540, 36873), (612, 32535), (723, 27540), (765, 26028), (810, 24582), (918, 21690), (964, 20655), (972, 20485), (1020, 19521), (1205, 16524), (1215, 16388), (1377, 14460), (1446, 13770), (1530, 13014), (1620, 12291), (1836, 10845), (2169, 9180), (2295, 8676), (2410, 8262), (2430, 8194), (2754, 7230), (2892, 6885), (3060, 6507), (3615, 5508), (4097, 4860), (4131, 4820), (4338, 4590)]